Where do upper motor neurons synapse onto lower motor neurons?.
Answers
Answer:Upper motor neurons synapse onto lower motor neurons in the corticospinal tract, which is involved in the control of voluntary movements.
The point where the upper motor neurons synapse onto lower motor neurons is known as the corticospinal tract, which is also known as the pyramidal tract.
This is a part of the central nervous system that originates from the cerebral cortex and terminates at the spinal cord.
The corticospinal tract is involved in the control of voluntary movements, with the upper motor neurons responsible for the initiation of voluntary movements, and the lower motor neurons responsible for the execution of those movements.
Neurons are specialized cells that transmit information within the nervous system. They communicate with other neurons by releasing chemicals called neurotransmitters, which bind to receptors on the next neuron's surface, triggering an electrical signal.
Motor neurons are a type of neuron that carries signals from the central nervous system to muscles, causing them to contract. They are located in the spinal cord and brainstem and are responsible for initiating and controlling movement.
The corticospinal tract originates from the cerebral cortex and terminates at the spinal cord.
Neurons are specialized cells that transmit information within the nervous system, with motor neurons carrying signals from the central nervous system to muscles, causing them to contract.
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Related Questions
where is a squall line located in regards to the warm and cold front?
a.) on the warm front/ behind the cold front
b.) behind the warm front/ behind the cold front
c.) ahead of the warm front/ behind the cold front
d.) behind the warm/ ahead of the cold front
Answers
Answer:
d.) Behind the warm front/ Ahead of the cold front
Explanation:
Because I took the test and it said this was the right answer
A squall line is located d.) behind the warm/ ahead of the cold front.
Where are squall lines found?Squall strains are commonplace across the United States east of the Rockies, mainly at some stage in the spring whilst the atmosphere is maximum "dynamic." A "bow echo" or "bowing line segment" is an arched/bowed outline of thunderstorms, now and again embedded inside a squall line.
A squall line, or more correctly a quasi-linear convective system (QLCS), is a line of thunderstorms, frequently forming along or in advance of a chilly front. in the early twentieth century, the time period changed into used as a synonym for the bloodless front (which often is observed with the aid of abrupt and gusty wind shifts).
Squall strains normally form in risky atmospheric environments wherein low-degree air can upward push unaided after being to begin with lifted to the point where condensation of water vapor occurs.
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On the Galapagos Islands there are birds that have large beaks and those that have small beaks. How would natural selection work on these birds if their food source were to become just one size?
A. The large beak birds would thrive more than the small beak birds.
B. All of the birds would go extinct due to being unable to handle the new food.
C. The population would eventually shift to the beak size that was best adapted for the food.
D. The small beak birds would mate with the large beak ones to create a hybrid that could eat the food.
Answers
which of the following is a measure of the force with which molecules in the atmosphere push on the surface?
A. air pressure
B. temperature
C. precipitation
D. relative humidity
Answers
Answer:
temperature
Explanation:
Why do you think engineers working on the Venice Tide Barrier project are following the Engineering and Design Process?
A. A creative, effective solution an be developed
B. The Engineering and Design Process costs more time and money
C. It eliminates the need for creativity
D. Over time, there will be no need to brainstorm or test ideas
Answers
Answer:
Please correct me if I’m wrong but I believe it’s cause it’s A
Explanation:
sorry If I answered your question wrong I didn’t mean to I really tried
Answer:
listening the money by the drums
Explanation:
ughhh can someone answer this dang biology question I cant!!!!! I will mark you brainliest!!
Referring to the graph, what phases together would account for approximately 25% of the time spent from a cell in the cell cycle?
A) M phase and S phase
B) S phase and M phase
C) G1 phase and M phase
D) G2 phase and M phase
Answers
Answer:
A - M phase and S phase
Explanation:
describe in detail the organization of the ig gene loci. v region is encoded by the v, d, and j gene segments heavy chain light chain noncoding dna
Answers
The IG gene loci are composed of three segments of DNA: V (variable), D (diversity), and J (joining). The V region is encoded by the V, D, and J gene segments, and is responsible for the variability in the amino acid sequences of immunoglobulin proteins.
The gene for an immunoglobulin molecule is made up of separate gene segments, with each segment having its own promoter and enhancer regions. The genes that make up the immunoglobulin are located on different chromosomes in mice and humans.
The heavy and light chain immunoglobulin gene loci are different for the heavy and light chains of immunoglobulins. They are regulated in distinct ways.The immunoglobulin heavy-chain gene (Igh) is found on mouse chromosome 12 and on human chromosome 14.
This gene is made up of several different gene segments, including Variable (V), Diversity (D), and Joining (J) gene segments. During early B-cell development, the D and J gene segments are joined first, then the resulting DJ segment is combined with a V gene segment to create a complete gene for the heavy chain.
As a result, there are numerous potential combinations of the heavy-chain gene available. Light-chain immunoglobulin gene loci are found on mouse chromosome 16 and human chromosome 2. The immunoglobulin light chain is made up of two separate protein chains: kappa (κ) and lambda (λ). Both κ and λ chains contain a V and a J gene segment.
Early B-cell development involves the rearrangement of a single V gene segment and a single J gene segment to produce the light chain. As a result, there are two different possible κ light-chain genes and two different possible λ light-chain genes, for a total of four possible light-chain genes.
The non-coding DNA is the DNA that does not encode protein, but it contains regulatory elements that control gene expression. It is essential in determining where and when genes are expressed.
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Choose your favorite food. Describe its pathway through the digestive system. Make sure you include in your description the following terms: teeth, salivary gland, bolus, amylase, pepsin, small intestine, villi, stomach, chime, large intestine, esophagus, liver, and pancreas
Answers
The bolus of partially digested pizza then travels down the esophagus and into the stomach, where it is mixed with gastric juices that contain pepsin, an enzyme that helps break down proteins. The mixture of partially digested pizza and gastric juices is called chime.
The chime then moves from the stomach into the small intestine, where it is further broken down by enzymes from the liver and pancreas. The small intestine is lined with tiny finger-like projections called villi, which absorb the broken-down nutrients and pass them into the bloodstream.
Finally, the remnants of the digested pizza move into the large intestine, where water and electrolytes are absorbed, and the remaining material is eliminated as feces.
In this way, the pizza is broken down and its nutrients are absorbed and utilized by the body as it travels through the digestive system
the urinary bladder is located in the __________ region.
Answers
The urinary bladder is located in the lower abdominal region.
The hypogastric region is the area below the umbilical region and between the right and left iliac regions. It is also sometimes referred to as the pubic region or the lower pelvic region. The bladder is positioned in the pelvis, just behind the pubic bone, and its location can vary slightly depending on the individual's body composition and bladder filling status.
The bladder, which is a muscular organ responsible for storing and eliminating urine, is positioned within the pelvis. It is situated just behind the pubic bone in the hypogastric region. The exact location of the bladder can vary slightly depending on factors such as an individual's body composition and the extent to which the bladder is filled with urine.
In general, the bladder rests in the pelvis and is held in place by various ligaments and pelvic floor muscles. When the bladder is empty, it may sit lower within the pelvis, closer to the pubic bone. As it fills with urine, the bladder expands and rises higher in the abdominal cavity.
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imagine you are a paleoanthropologist. you have found a fossil that dates to 190,000 years ago in africa, and it has a high, rounded skull, a cranial capacity of 1,400 cc, and long, thin femora (thigh bones). how would you classify this specimen?
Answers
The fossil is classified as Homo sapiens.
The characteristics of Homo Sapiens are:Brain volume varies between 1000-1450 cc.The cerebrum and cerebellum have developed (especially in the skin of the brain).Has a height of about 130-210 cm with an average weight of 30-150 kg.The bones of the forehead and the back of the skull are rounded and high.The neck muscles are shrinking.Already walking and standing tall.Has more perfect features.Based on the distribution of ancient human fossils, experts concluded that modern humans came from Africa because in that region many of the oldest Homo Sapiens bones were found. From Africa, Homo sapiens humans then wandered out of Africa and spread to Asia, Europe, America, and Australia. Conclusions about the origin of man.
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Which of the following plant propagation methods requires sterile conditions?
• hybridization
• clone by layering
• root division
• tissue culture
Answers
In 1839, Schleiden and Schwann began formulating a theory of cells and their role in living organisms. Over time, cell theory has been updated. Modern cell theory is summarized below.
Answers
Answer: The modern cell theory are in following ways:-
(1) All known living things are made up of one or more cells.
(2) All living cells arise from pre-existing cells by division.
(3) The cell is the fundamental unit of structure and function in all living organisms.
(4) The activity of an organism depends on the total activity of independent cells.
(5) Energy flow (metabolism and biochemistry) occurs within cells.
(6) Cells contain DNA which is found specifically in the chromosome and RNA found in the cell nucleus and cytoplasm.
(7) All cells are basically the same in chemical composition in organisms of similar species.
Explanation:
T.F: a phylogenetic tree visually depicts the history of the evolution of species, populations, or genes. it is especially useful for studying the lines of descent and relationships among groups.
Answers
The visual representation of the history of a species, population, or gene's evolution is a phylogenetic tree. The links and branching patterns between various species or genetic lines are shown diagrammatically. The answer is true.
In biology and evolutionary research, phylogenetic trees are frequently used to examine the connections and lines of descent among collections of species or genes.
Since they offer a means of comprehending the evolutionary history and relatedness of various animals, phylogenetic trees are particularly helpful for examining the lines of descent and connections among groupings. Researchers can forecast common ancestors, infer evolutionary relationships, and learn more about the speciation and diversification processes by examining the branching patterns and the order of splits in the tree.
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Hardening of the arteries would __________ pulse pressure because __________ compliance to absorb the pressure from the flow. a. increase, decreases b. increase, increases c. decrease, decreases d. decrease, increases
Answers
Hardening of the arteries would increase pulse pressure because it decreases compliance to absorb the pressure from the flow. This corresponds to option A.
When arteries harden, their walls become less elastic, making it more difficult for them to expand and contract with each heartbeat. This reduced compliance means that the arteries are unable to effectively absorb the pressure generated by the heart's contractions, leading to a higher difference between systolic and diastolic pressures, known as pulse pressure.
An increased pulse pressure can be an indicator of arterial stiffness and potential cardiovascular issues, such as atherosclerosis or hypertension. In summary, hardening of the arteries increases pulse pressure due to the decreased compliance of arterial walls to absorb pressure from blood flow.
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what does a plant need to grow and stay healthy ?
Answers
Answer:
Plants need air, light, warmth, water and nutrients to be healthy. If a plant doesn't have one of these requirements it could affect its growth or even die.
Explanation:
A plant needs Sunlight Water, soil, air to grow and stay healthy.
How do we explain?Plants need sunlight to convert carbon dioxide and water into food through photosynthesis. This process provides plants with the energy they need to grow and develop.
Plants need water to transport nutrients and minerals from the soil to their leaves and other parts. Water also helps to regulate the plant's temperature and prevent it from drying out.
Plants need soil to provide them with the nutrients and minerals they need to grow. Soil also helps to anchor the plant in place and provide it with support.
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9. Mammals have backbones. Which word in the list below is a synonym for backbones?
monotreme
vertebra
O endotherm
marsupial
Answers
Answer: Vertebrae
Explanation:
What makes Pluto different from the 8 planets in our Solar System?
Answers
Answer:
Hey mate.......
Explanation:
This is ur answer.....
The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. ... It contains the asteroid belt as well as the terrestrial planets, Mercury, Venus, Earth, and Mars.
Hope it helps!
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please help meeee ASAP!!!
Answers
Answer:
i think its RNA cuz RNA produces proteins
The self-complementarity within each strand confers the potential to form 1 hairpin, cruciform. 2 hairpin, B-form 3 palindrome, cruciform 4 palindrome, B-form
Answers
La autocomplementariedad de cada cadena de ADN o ARN permite la formación de estructuras como hebras y cruciformes. Estos motivos estructurales son fundamentales en el plegamiento de ADN y ARN, la regulación génica y otros procesos biológicos.
La autocomplementarity de cada cadena de DNA o RNA permite la formación de varios motifs estructurales. Particularmente, esta autocomplementarity concede la capacidad de crear hebras y estructuras cruciformes. In the case of one hairpin, a single strand folds back on itself, creating a stem-loop structure. El patrón de enrollamiento más complejo es el resultado de dos estructuras de nudo que involucran dos regiones complementarias dentro del mismo rollo. Sin embargo, los palindromes muestran repeticiones invertidas dentro de una fibra, lo que permite la unión de pares de base y la formación de estructuras de forma cruciforme o B. These structural motifs are crucial in DNA and RNA folding, gene regulation, and other biological processes.
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Every DNA strand has the ability to produce hairpin structures due to its self-complementarity. When a single strand curls back on itself, creating a stem-loop structure, the result is a hairpin structure.
Hydrogen bonds formed between complementary nucleotides in the same strand help to stabilise this structure.The term "cruciform" describes a DNA structure that takes on a cruciform shape when two hairpin structures inside the same DNA molecule align in an antiparallel direction. Palindromic sequences, which are DNA sequences that read the same on both strands when the directionality is ignored, are frequently linked to cruciform formations.The usual right-handed double helical DNA helix, which is most frequently seen under physiological settings, is referred to as being in "B-form" instead.
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Where does the energy in most ecosystems originate
Answers
Answer:
it's originated from sun
which is the most poisonous fish in the world?
Answers
Answer:
The reef stone fish
Explanation:
it erects 13 venomous spikes along it's back
Please no links they are not working
Which climate experiences the greatest range in temperature?
A. Taiga
B. Desert
C. Tropical Rainforest
D. Desert and Taiga
Answers
Answer:
C!
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all of the following are functions of muscles except a. control of openings. b. heat production. c. respiration. d. secretion. e. stability.
Answers
The function of muscles except option D. Secretion.
The muscular machine is composed of specialised cells known as muscle fibers. Their principal characteristic is contractibility. Muscle mass, attached to bones or inner organs and blood vessels, are chargeable for motion. Nearly all movement within the body is the end result of muscle contraction.
Those muscle tissues assist you flow, carry things, pump blood through your frame, and even help you breathe. While you reflect onconsideration on your muscle tissue, you probably suppose most about those you can manipulate. These are your voluntary (VOL-uhn-ter-ee) muscular tissues, which means you may control their movements.
Muscle tissue flow body components by using contracting and then enjoyable. Muscle tissues can pull bones, however they cannot push them back to the authentic role.
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A map distance of 25 map units between two genes indicates which of the following?
Multiple Choice
A. The genes are 25 millimeters apart
B. 50% of the offspring exhibit recombination between the two genes
C. There are 25 other genes between the two genes of interest
D. 25% of the offspring exhibit recombination between the two genes
Answers
A map distance of 25 map units between two genes indicates 50% of the offspring exhibit recombination between the two genes.
Here correct option is B.
In genetics, a map unit (also known as a centimorgan) represents a unit of genetic distance between two genes on a chromosome. It is a measure of the frequency of recombination between two genes during meiosis.
A map distance of 25 map units between two genes indicates that, on average, 25% of the offspring resulting from a cross between individuals with different alleles at these genes will exhibit recombination between them. Since each crossover event between homologous chromosomes results in a recombination event, the frequency of recombination is proportional to the map distance.
Therefore, the correct interpretation is that 50% of the offspring will exhibit recombination between the two genes when the map distance is 25 map units.
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PLS HELP 20 PTS What other factors might cause individuals in this antelope herd to emigrate
Answers
Answer:
When you think about it - this is a similar case that happens in our species as well. You have groups of people who want to emigrate to different countries in hope for better grassland.
They emigrate but are immigrants from the perspective of the grassland where they will be.
The other factors that might cause individuals in this antelope herd to emigrate are immigration, increasing birth rate, and decreasing death rate.
What is emigration?When an animal emigrates, it's because its habitat is no longer ideal for it and it needs to move to a new location with a better habitat. Animals that migrate or emigrate never go back to the place they were originally from.
This is a similar situation to one that occurs in our species. There are various groups of people who want to immigrate to various nations in search of better grasslands. From the perspective of the grassland where they will be, they migrate but are immigrants.
Therefore, Immigration, a rising birth rate, and a declining death rate are some additional factors that could result in members of this antelope herd leaving the group.
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Write the procedure of stone grafting.
Answers
Answer:
Stone/epicotyl grafting is a simple, cheap and quick method of mango propagation with a success rate of 75-80%. For this purpose, stones should be sown in June-July on raised beds of size 1x3 m. the beds should e prepared by mixing soil and FYM in the proportion of 2:1.
Explanation:
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FILL IN THE BLANK. ______is the process of cutting DNA into fragments and inserting the fragments with a desired ________ into another organism of the same or different species.
Answers
The process of cutting DNA into fragments and inserting the fragments with a desired DNA into another organism, the organisms can be of the same or different species is known as genetic engineering.
What is genetic engineering?
Genetic engineering is the process of cutting DNA into fragments and inserting the fragments with a desired DNA into another organism.
The organism can be of same species or different species.
It is also called genetic modification.
This process is the direct manipulation of an organism’s genome using biotechnology
It is the artificial manipulation, modification, and recombination of DNA.
The aim of genetic engineering is to produce organisms that have new or improved traits or characteristics.
By isolating and copying the genetic material of interest using molecular cloning method, a new DNA may be inserted in the host genome
For example, genetic engineering can be used to create crops that are resistant to pests and diseases.
Who created the first recombinant DNA?
Paul Berg, an American Biochemist created the first recombinant DNA molecules.
This process applies in the field of Medicine, research, industry and agriculture.
Using genetic engineering, the diseases such as malaria, dengue can be eliminated by sterilizing the mosquitoes.
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What are the 5 main points of Darwin's theory?
Answers
Answer:
For Darwin himself these five theories were apparently much more a unity than they appear to a person who analyzes them with modern hindsight. The five theories were: (1) evolution as such, (2) common descent, (3) gradualism, (4) multiplication of species, and (5) natural selection.
Which DNA fingering technique examines the length variation of DNA repeat sequences in human DNA?
A) VNTRs (variable tandem repeats)
B) PCR (polymerase chain reaction) analysis
C) STRs (short tandem repeats)
D mtDNA (mitochondrial DNA) analysis
Answers
Answer: The question is incorrect, below is the correct question
Which DNA FINGERPRINTING technique examines the length variation of DNA repeat sequences in human DNA?
The correct answer to the question is option D
mtDNA (mitochondrial DNA) analysis
Explanation: DNA fingerprinting technique is a laboratory technique used by geneticists.it entails placing of DNA samples into wells,these wells are then placed in a slab of gels and thereafter passing a current through the gel.This is done to ascertain the uniqueness of a DNA pattern and thus be able to differentiate people of same species.
There are several methods of DNA fingerprinting as outlined in the options given with the question.
In mtDNA (mitochondrial DNA) analysis,The Genetic samples are extracted from the biological materials, these samples extracted are total genomic DNA like hair,tooth or samples of blood, Several copies of these genomic DNA are then produced using a polymerase chain reaction and flanking primers inorder to examines the length variation of DNA repeat sequences in human DNA.
Answer:
D. Mitochondrial DNA Analysis
Explanation:
Edg 2021
Nutrition A biologist has 500 kilograms of nutrient A, 600 kilograms of nutrient B, and 300 kilograms of nutrient C. These nutrients will be used to make 4 types of food-P, Q, R, and S-whose contents in percent of nutrient per kilogram of food) and whose "growth values" are as shown in the following table: P e R S A 0 0 37.5 62.5 B 0 75 50 37.5 с 100 25 12.5 0 Growth Value 90 70 60 50 How many kilograms of each food should be produced in order to maximize total growth value? Find the maximum growth value.
Answers
To maximize the total growth value, the biologist should produce 200 kilograms of food type P, 300 kilograms of food type Q, and 0 kilograms of food types R and S. The maximum growth value achieved with this production plan is 67,500.
To determine the optimal production quantities, we can use linear programming techniques. Let's define the decision variables as follows:
- Let x be the number of kilograms of food type P produced.
- Let y be the number of kilograms of food type Q produced.
- Let z be the number of kilograms of food type R produced.
- Let w be the number of kilograms of food type S produced.
We need to maximize the objective function: 90x + 70y + 60z + 50w (representing the total growth value).
Subject to the following constraints:
- A: 0x + 0y + 37.5z + 62.5w ≤ 500 (nutrient A constraint)
- B: 0x + 75y + 50z + 37.5w ≤ 600 (nutrient B constraint)
- C: 100x + 25y + 12.5z + 0w ≤ 300 (nutrient C constraint)
- Non-negativity: x ≥ 0, y ≥ 0, z ≥ 0, w ≥ 0
Solving this linear programming problem using optimization techniques will yield the optimal production quantities mentioned earlier, resulting in a maximum growth value of 67,500.
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(Brainlest) What might occur if a cell entered mitosis without completing the s stage of interphase?
Answers
Answer:
i think it is B .
Answer:The answer is D, because there would not be enough DNA, and that could lead to self-destruction, B is wrong